supply of cutting gas , petroleum cutting gas in lieu of dissolved acetylene to be used with oxygen in cutting r ailway wheels hub at hub cutting stations. the hub size is 190 mm diameter and 200 mm thickness.p etroleum cutting gas is required in 19 kgs. cylinder. cutting gas in cylinders to be connected in cuttin g gas manifold of the size 72 +72 cylinders manifold room at rwp/bela from time to time based on co nsumption supply of filled cylinders will be taken and empty cylinder will be returned after use. [ warr anty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]